﻿/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * Copyright (c) 2020 The Dotnetty-Span-Fork Project (cuteant@outlook.com)
 *
 *   https://github.com/cuteant/dotnetty-span-fork
 *
 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
 */

using System;

namespace DotNetty.Buffers
{
    // support passing arrays of other types instead of having to copy to a ByteBuf[] first
    interface IByteWrapper<T>
    {
        IByteBuffer Wrap(T bytes);

        bool IsEmpty(T bytes);
    }

    sealed class ByteArrayWrapper : IByteWrapper<byte[]>
    {
        public static readonly ByteArrayWrapper Instance = new ByteArrayWrapper();

        private ByteArrayWrapper() { }

        public bool IsEmpty(byte[] bytes)
        {
            return 0u >= (uint)bytes.Length;
        }

        public IByteBuffer Wrap(byte[] bytes)
        {
            return Unpooled.WrappedBuffer(bytes);
        }
    }

    //sealed class ByteBufferWrapper : IByteWrapper<IByteBuffer>
    //{
    //    public static readonly ByteBufferWrapper Instance = new ByteBufferWrapper();

    //    private ByteBufferWrapper() { }

    //    public bool IsEmpty(IByteBuffer bytes)
    //    {
    //        return !bytes.Remaining();
    //    }

    //    public IByteBuffer Wrap(IByteBuffer bytes)
    //    {
    //        return Unpooled.WrappedBuffer(bytes);
    //    }
    //}
}
